Montana County Map

Spanning an area of 147,040 square miles, Montana is the fourth largest state in the United States. There are 56 counties in the state. Beaverhead, Deer Lodge, Gallatin, Jefferson, Lewis & Clark, Madison, Missoula, and Chouteau were the original counties when the Montana Territory was created in 1864. The area of Yellowstone National Park comes under Gallatin County and Park County.
Covering an area of 5,543 square miles, Beaverhead County is the largest county in Montana. Silver Bow County in southwestern Montana is the state's smallest county by area. With more than 155,000 inhabitants, Yellowstone County is the most populous county in the state. Petroleum County was the last county out of 56, founded in 1925. It is also the least populous county in Montana. Daniels County in northeastern portion of the state is considered one of the most rural counties in the US.

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List of Montana Counties

County Name Population (2016) Area (sq. mi.) Beaverhead County Map 9,401 5542.31 Big Horn County Map 13,343 4994.81 Blaine County Map 6,601 4226.18 Broadwater County Map 5,747 1191.35 Carbon County Map 10,460 2047.99 Carter County Map 1,203 3339.57 Cascade County Map 81,755 2697.9 Chouteau County Map 5,759 3973.24 Custer County Map 11,924 3783.13 Daniels County Map 1,755 1426.09 Dawson County Map 9,327 2373.14 Deer Lodge County Map 9,085 736.98 Fallon County Map 3,120 1620.33 Fergus County Map 11,413 4339.17 Flathead County Map 98,082 5098.34 Gallatin County Map 104,502 2605.84 Garfield County Map 1,310 4668.06 Glacier County Map 13,694 2994.72 Golden Valley County Map 831 1175.3 Granite County Map 3,368 1727.44 Hill County Map 16,542 2896.36 Jefferson County Map 11,853 1656.64 Judith Basin County Map 1,940 1869.85 Lake County Map 29,758 1493.77 Lewis and Clark County Map 67,282 3460.96 Liberty County Map 2,409 1429.76 Lincoln County Map 19,259 3612.67 McCone County Map 1,700 2642.53

County Name Population (2016) Area (sq. mi.) Madison County Map 7,924 3586.54 Meagher County Map 1,827 2391.82 Mineral County Map 4,184 1219.82 Missoula County Map 116,130 2597.97 Musselshell County Map 4,589 1867.15 Park County Map 16,114 2802.41 Petroleum County Map 489 1653.9 Phillips County Map 4,133 5139.57 Pondera County Map 6,084 1624.7 Powder River County Map 1,746 3297.18 Powell County Map 6,858 2325.94 Prairie County Map 1,182 1736.55 Ravalli County Map 42,088 2394.21 Richland County Map 11,482 2084.09 Roosevelt County Map 11,305 2355.6 Rosebud County Map 9,287 5012.37 Sanders County Map 11,534 2762.17 Sheridan County Map 3,648 1676.58 Silver Bow County Map 34,553 718.31 Stillwater County Map 9,406 1795.09 Sweet Grass County Map 3,623 1855.08 Teton County Map 6,056 2272.61 Toole County Map 4,977 1910.95 Treasure County Map 692 978.86 Valley County Map 7,539 4921 Wheatland County Map 2,117 1423.09 Wibaux County Map 1,093 889.31 Yellowstone County Map 158,437 2635.15

Source: factfinder.census.gov

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Last Updated Date: August 5th, 2017